Door check



N M 1 s/MMM@ a April 28, 1931.` H. J. .EsTEY ET Al.

DOORCHECK Filed Feb. 15, 1928 Patented Apr. 28, 1931 y Unirse STATESPATENT ortica HARRY J. Es'rnY AND LLOYD L. EsrnY, or LANsINe,llw'IIcHIGAN Doon CHECK Application led February 15, 1928.. SerialNo.72`54,361.

This invention relates to a door check, and the invention aims toprovide a door check which will efficiently perform the function forwhich `it is intended, and which will con- I5 tinue to so perform afterlong usage, and

which at the same time is of a simplified construction embodying aminimum number of parts.

`It is appreciated that quite a number of door checks of different kindshaveheretofore been proposed. Some of these door checks have taken theform of a plunger acted upon by a spring. Tt has also been proposed toprovide a door checkin the nature of an eccentrically mounted checkmember adapted to engage the floor by reason of such mounting and whichis held in place by a spring controlled locking member co-operating witha plurality of recesses for receiving the locking member. Here againthespring action becomes defective after a period of use. The lockingdevice is arranged to lock the member only in a certain position and itofttimes occurs that when the check member is in proper checkingposition the co-operating locking devices are out of position.

The present invention contemplates a check which takes the form of aneccentricallymounted member but, wherein all movable mechanism iseliminated except the check member itself. The invention contemplatesfrictional means which `acts upon the rotational movement of the checkmember, and the entire assembly is such that this friction can bemaintained throughout long usage and can be increased from time to timeif the same be found necessary. l

In the accompanying drawings:

l is a side elevational view of a door provided with a door checkconstructed in accordance with the invention, and indicating oneposition in which the check may be positioned upon a door.

' Fig. 2 is a plan View of a check in nonchecking position.

Fig. 3 is a view similar to Fig. 2 but showing the check moved tooperative or checking position.

Fig. 4 is a sectional view taken on line 4 4.

. onV the under side of of Fig. 3, illustrating the structural featuresof the'invention.

ln Fig. 1the door check, which is generally referenced l, is shownapplied tothe lower portion and near the free edge of a door 2. This isperhaps an advantageous location for the check, although it can beplaced wherever desired. The check consists primarily of two portions,one of which is a flanged member 3 which may be liXed to the door l bysuitable screws 4 and 5.v This flange member is preferably a stamping'and is just deep enough to receive a nut for the attachment of theother part.

The other plate 10 and a portion of the check consists ofa plate l1,both of which are preferably stampings, the plate 11 being provided withan extension 12. Between these two" plates is. disposed a disc of isgenerally oval in'shape, as shown 1n Figs.

lrubber 13 which 2 and 3. Screws 14 are taken through the plate 11 andreceived in screw threaded' apertures inthe plate l0. The tigh tening ofthese screws assemble the two plates and the rubber disc together.

This second portion is rotatably mounted and for this purpose the screwor bolt 15 extends through tlie two plates and therubber disc, which ismade tight by erably a'lock washer 17 lis referable to place washers aresuch as to a nut 16 disposed the member 3, and prefused. Also itis18jand 19 on the oltv 15, as shownin Fig. ,andthese washers4 provide forfrictional turning ofthe rotatable member upon the bolt 15, andY forthis vpurpose may advantageously be made of fiber.

The rotatable member is eccentrically mounted on the bolt 15.

Inorder to mount the check on a door the proper position is lirstascertained, and then D the movable part may be turned by use of theextension l2, to a position which approximates that of Fig. -3,sothatthe screw l'can be "putiinto placef'whereupon the check mem'- ber may bereversed and the screw 5 *secured in place. When t-he checlris not inuse it may be turned up as shown in Fig. 2 or in some position betweenthat of Fig. 2 and that of Fig. To check the door therotatable partisturne'd upon" the bolt 15 which may con- T- Y floor at this time andthere is lifting action on the door. n Ordinarily, there is some slightmovement in the door by reason of its hinged mounting so that the doorcan be raised slightly. Thus, by the weight of the door itself, the doorcheck is held 'down against.

the floor.

One of the features of the invention is the structural arrangement ofthe rotatable member. A disc of rubber is preferably used, as shown, andclamped between two plates. lt

and a friction washer surrounding said bolt and located between saidsupport-ing cup and the inner face plate whereby tightening of the boltacts upon the friction disk and to compress the rubber disk to maintainsaid friction, said supporting plate being positioned on the door sothat when the door checkelenientisrocked on the-'bolt intor contact withthe floor one of the short sides of the oval disk contacts with thefloor.

ln, testimony whereof we, ai'iix our signatures.

Y HAR-RY J. ESTEY. LLOYD L. ESTEY.

will be seen, therefore, that if conditions ever l f require theclamping of the rubber disc can be increased by merely tightening thescrews Y 14. The fractional resistance to the rotation of the checkmemberY is offered by the fiber washers. 'it will be noted that the boltl5.,

extends throughout the disc of rubber and when 1t 1s tightened the discis slightly com pressed. Due to this frictienal engagement between thewashers with the rotatable parts is maintained. However, if after longuse, the friction becomes lessened it can easily be restored bytightening the screw 15.

It has been proposed to provide a check with a rubber ring or tire forengaging the floor. In such a construction a rubber ring is placed onits mounting under tension and the result is that the ring loses itselasticity after long use thus interfering with the eliicient operationof the check. By utilizing a rubber disc, however, the rubber is notunder tension so that it does not become dead, even after long use. Therubber disc however,

may be under slight compression in order to effect the proper frictionaction, butt-his is not suflicient to materially Yeffect the life of therubber disc.

Ve claim:

A door check comprising a cupv shapedsupporting member adapted to beplaced upon a door with the rim of the cup in contact therewith,securing means passing throughthe bottomof the cup-shaped member forholding the same to the door, a check member comprisingan oval diskofrrubber, an inner face plate, an outer face plate, a plurality ofse-,Y

curing devices passing through the rubber disk and holding the faceplates assembled on Y opposite sides of the disk, said faceplates havingtheir outer peripheral edgesA locatedl inwardly of the outer peripheraledge of the rubber disk, one of saidiface plates having .a projectingApiece which extends beyondr t-he peripheral edge of the rubber disk andconstitutes an operating handle,`a bolt passing through the facing disksand rubber diskec-Vl centric of the rubber disk and near one of itselongated sides, a nut inside the cup-shaped, support into which theboltis screw threadedL CII

